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근류균 , 병원성사상균 및 최아기간이 알팔파의 생장에 미치는 영향
김종섭,최기춘,임계택 ( J . S . Kim,K . C . Choi,K . T . Lim ) 한국축산학회 1997 한국축산학회지 Vol.39 No.2
This study was conducted to investigate the effects of by Rhizobium meliloti, pathogenic fungi and pregermination time on the growth of alfalfa. Alfalfa was grown in pots in vinyl house in Chonnam Nati~al University from May 30 to August 24, 1996. These experiments were designed in a split-split plot method with Rhizobium inoculation(Non-inoculation, Inoculation) as the main plot, pathogenic fungi(F. culmorum, F. oxysporum, F. solcmi, R. solcni) as the subplot, and pregermination time(0, 24, 48 hrs.) as the sub-subplot, in four replications. Treatments of pathogenic fungi were lower than control in plant height and dry weight of shoot and root (p$lt;0.05), which were significantly different among pathogenic fungi. In plant height, there were not significant differences between the inoculations of Rhizobium and the noninoculations of Rhizobium at 6 weeks after seeding, but it was more increased in the inoculations of Rhizobium than in the non-inoculations of Rhizobium at 9 and 12 weeks after seeding(p$lt;0.05). At 6 weeks after seeding, the pregerminated plant grew taller than that of the non-treated, but the significant difference in the dry weight of shoot and root was not shown. At 9 and 12 weeks after seeding, the plant height, and the dry weight of shoot and root seemed to be greater on the pregermination compared to the nonpregermination.
김종섭(J. S. Kim),박원규(W. G. Park) 한국전산유체공학회 1998 한국전산유체공학회지 Vol.3 No.1
A new and efficient inverse design method based on the numerical optimization technique has been developed. The 2-D incompressible Navier-Stokes equations are solved for obtaining the objective functions and coupled with the optimization procedure to perform the inverse design. The steepest descent and the conjugate gradient method have been applied to find the searching direction. The golden section method was applied to compute the design variable intervals. It has been found that the airfoil and the pump impellers are well converged to their targeting shapes.
김종섭(J. S. Kim),박원규(W. G. Park) 한국전산유체공학회 1998 한국전산유체공학회지 Vol.3 No.1
A new and efficient inverse design method based on the numerical optimization technique has been developed. The 2-D incompressible Navier-Stokes equations are solved for obtaining the objective functions and coupled with the optimization procedure to perform the inverse design. The steepest descent and the conjugate gradient method have been applied to find the searching direction. The golden section method was applied to compute the design variable intervals. It has been found that the airfoil and the pump impellers are well converged to their targeting shapes.
대면적 도광판 성형을 위한 R-I/C Molding 공정 기술
김성훈(S. H. Kim),김종섭(J. S. Kim),진민영(M. Y. Jin) 한국소성가공학회 2012 한국소성가공학회 학술대회 논문집 Vol.2012 No.10
The recent LCD TV market has made efforts to produce thinner, brighter, and clearer products, and experienced the rapid light source replacement from a line source of light CCFL to a point source of light LED. In particular, LGP(Light Guiding Panel) among key parts composing BLU(Back Light Unit) has limits of the injection molding technology as well as the mold design, its processing and manufacturing technology so that it is hard to produce large LGP over 40 inch. The initial injection test was conducted to improve production stabilization and productivity for these large-area LGPs (light guide panels) which are over 40 inches with injection molding. And by analyzing several results drawn from this, the optimization of injection molding process technology was performed. As a result, process technology was established to manufacture and produce large-area LGPs with 40 inches by injection molding. And through such injection molding process technology, it was possible to secure mass production. It is expected to enter various industrial areas (lighting area/advertising area, etc.) with the optimization of large-area thin plate molding process technology.